Curved Display Touch Interaction via Spherical Projection
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Solution Overview
Problem
Conventional user interface technologies are inadequate for curved displays, failing to leverage their unique characteristics and presenting challenges such as maintaining object orientation and accommodating multi-user interactions effectively.
Innovation Solution
Implementing touch interaction mechanisms that preserve a predetermined orientation for objects on curved displays, including object behavioral auto-rotation and tether behavioral units, to facilitate user-friendly manipulation and collaboration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional user interface technologies are used on curved displays, then the display can show 360° field-of-view and support multiple users, but object orientation becomes inconsistent and user interaction becomes complex
Solution Approach 1:
The patent applies spherical geometry principles to map touch inputs from a curved surface onto a flat 2D plane. The spherical projection system converts 3D curved display coordinates into 2D planar coordinates, allowing conventional flat-display UI technologies to work on curved surfaces while maintaining consistent object orientation and predictable user interaction behavior
Solution Approach 2:
The patent introduces a spherical projection intermediary layer between the curved display hardware and the user interface software. This projection system acts as a mediator that transforms touch inputs from the curved surface into standardized 2D coordinates, enabling consistent object manipulation across different user positions without requiring complex spatial calculations
2Adaptability or versatility
If objects are allowed to rotate freely on curved display, then users can explore different perspectives, but object orientation becomes unpredictable and difficult to control
Solution Approach 1:
The spherical projection system inherently handles object orientation by mapping 3D spherical coordinates to 2D plane coordinates. Objects maintain consistent orientation relative to the projection plane, allowing users to explore different perspectives by moving around the display while objects remain predictably oriented on the 2D projected surface
3Ease of operation
If touch screen interfaces are implemented on flat screens, then user interaction is simplified through direct touching, but the unique characteristics of curved displays cannot be leveraged
Solution Approach 1:
The patent extends flat-screen touch interface principles to curved displays by using spherical projection. The system maintains direct touch interaction simplicity while adapting to curved geometry through coordinate transformation, enabling users to touch and manipulate objects on spherical surfaces with the same intuitive gestures used on flat screens
Solution Approach 2:
The spherical projection system creates a universal interface that works across both flat and curved displays. By projecting curved surface coordinates onto a 2D plane, the system enables a single touch interface implementation to serve multiple display geometries, leveraging curved display characteristics while maintaining conventional interaction patterns
Data Source
AI summary
Touch interaction with a curved display (e.g., a sphere, a hemisphere, a cylinder, etc.) is facilitated by preserving a predetermined orientation for objects. In an example embodiment, a curved display is monitored to detect a touch input on an object. If a touch input on an object is detected based on the monitoring, then one or more locations of the touch input are determined. The object may be manipulated responsive to the determined one or more locations of the touch input. While manipulation of the object is permitted, a predetermined orientation is preserved.